30468857 has 2 divisors, whose sum is σ = 30468858. Its totient is φ = 30468856.

The previous prime is 30468847. The next prime is 30468887. The reversal of 30468857 is 75886403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24098281 + 6370576 = 4909^2 + 2524^2 .

It is an emirp because it is prime and its reverse (75886403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30468857 - 2⁶ = 30468793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30468827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15234428 + 15234429.

It is an arithmetic number, because the mean of its divisors is an integer number (15234429).

Almost surely, 2^30468857 is an apocalyptic number.

It is an amenable number.

30468857 is a deficient number, since it is larger than the sum of its proper divisors (1).

30468857 is an equidigital number, since it uses as much as digits as its factorization.

30468857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 30468857 is about 5519.8602337378. The cubic root of 30468857 is about 312.3336099817. Note that the first 3 decimals are identical.

The spelling of 30468857 in words is "thirty million, four hundred sixty-eight thousand, eight hundred fifty-seven".